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Platinum is an extremely rare metal,occurring as only 0.003 ppb in the Earth's crust. It is sometimes mistaken for silver (Ag).

Platinum is often found chemically uncombined as native platinum and alloyed with iridium as platiniridium.www.sportsyy.ru Most often the native platinum is found in secondary deposits; platinum is combined with the other platinum group metals in alluvial deposits.cheap tiffany jewelry The alluvial deposits used by pre-Columbian people in the Choc Department, Colombia are still a source for platinum group metals. Another large alluvial deposit was found in the Ural Mountains, Russia, which is still mined.

In nickel and copper deposits platinum group metals occur as sulfides (i.e., (Pt,Pd)S)), tellurides (i.e., PtBiTe),www.buyshoesclothing.cn antimonides (PdSb), and arsenides (i.e., PtAs2), and as end alloys with nickel or copper. Platinum arsenide, sperrylite (PtAs2), is a major source of platinum associated with nickel ores in the Sudbury Basin deposit in Ontario, Canada. cheap tiffany outlet The rare sulfide mineral cooperite, (Pt,Pd,Ni)S, contains platinum along with palladium and nickel. Cooperite occurs in the Merensky Reef within the Bushveld complex, Gauteng, South Africa.

In 1865 chromites were identified in the Bushveld region of South Africa followed by the discovery of platinum in 1906.The largest known primary reserves are in the Bushveld complex in South Africa.Tiffany Jewellery australia The large coppernickel deposits near Norilsk in Russia, and the Sudbury Basin, Canada, are the two other large deposits. In the Sudbury Basin the huge quantities of nickel ore processed makes up for the fact that platinum is present as only 0.5 ppm in the ore. www.shoes-bags-china.ru Smaller reserves can be found in the United States, for example in the Absaroka Range in Montana.www.tradingspring.cn In 2015, South Africa was the top producer of platinum with an almost 80% share followed by Russia and Canada.

Platinum exists in higher abundances on the Moon and in meteorites. Correspondingly, platinum is found in slightly higher abundances at sites of bolide impact on the Earth that are associated with resulting post-impact volcanism, and can be mined economically; the Sudbury Basin is one such example.

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